Andrea Mia Ghez is an American astrophysicist. She shared the 2020 Nobel Prize in Physics with Reinhard Genzel "for the discovery of a supermassive compact object at the centre of our galaxy". This object is generally recognized to be a black hole.
Her research focuses on the center of the Milky Way galaxy. She is a professor in the Department of Physics and Astronomy and the Lauren B. Leichtman & Arthur E. Levine chair in Astrophysics, at the University of California, Los Angeles. With Judith Love Cohen, she is the author of the book You Can Be a Woman Astronomer.